Improving international diversification benefits for US investors

There are two main questions that have attracted considerable attention in the financial literature over the last few years: whether international diversification benefits are still substantial in the current context of increasing market correlations and which approach provides better results in terms of out-of-sample returns and risk. In this context, the aim of this study is to provide empirical evidence about the economic gains that a US investor could obtain with a dynamic strategy based on the use of time varying returns and volatility forecasts from a multivariate VAR–DCC approach for the exchange trade funds of US, UK and Japan which are the most actively traded on the New York Stock Exchange in recent years. These findings are relevant not only for academics, but also for practitioners, especially for professional portfolio managers.     

Limitations of portfolio diversification through fat tails of the return Distributions: Some empirical evidence

This study investigates the level of risk due to fat tails of the return distribution and the changes of tail fatness (TF) through portfolio diversification. TF is not eliminated through portfolio diversification, and, interestingly, the positive tail has declining fatness until a certain level is reached, while the negative tail has rising fatness. This indicates that fat tails are highly relevant to common factors on systematic risk and that the relevance of common factors is higher for the negative tail compared to the positive tail. In the portfolio diversification effect, the declining fatness of the positive tail further reduces risk, but the rising fatness of the negative tail does not contribute to this effect. The asymmetry between the fatness of the positive and negative tails in the return distribution corresponds to the asymmetry of the trade-off relationship between loss avoidance and profit sacrifice that is expected as a consequence of portfolio diversification. Investors use portfolio diversification to reduce their risk of suffering high losses, but following this strategy means sacrificing high-profit potential. Our study provides empirical confirmation for the practical limitation of portfolio diversification and explains why investors with diversified portfolios suffer high losses from market crashes. An examination of the Northeast Asian stock markets of China, Japan, Korea, and Taiwan show identical results.     

Entrepreneurship and diversification on English farms: Identifying business enterprise characteristics and change processes

Despite the growing importance attached to entrepreneurship as a policy concept in European Union (EU) agriculture, little assessment has been made of its practical application. This paper makes a preliminary consideration of the issues in relation to on-farm diversification. First the literatures on agricultural diversification and innovation are reviewed to establish entrepreneurial traits in (1) business change processes, and (2) business enterprise characteristics. The business enterprise characteristics are then used to identify entrepreneurial diversified businesses from a sample of 118 agricultural enterprises in England. Some 15 entrepreneurial farm businesses were identified and their managers interviewed to reflect on the underlying change processes that they had adopted during 1997–2001; the effects of diversification in terms of socio-economic benefits at business and regional levels; and the effectiveness of agricultural business advice services in supporting entrepreneurial behaviour. Respondents confirmed the importance of networking processes to managing change in their businesses. Importantly all had benefited from diversification, through increased net income, reduced dependence on agricultural subsidies and greater income stability during the survey period. Regional economic benefits were more difficult to quantify, although positive employment generating effects were evident among businesses. Importantly respondents commented on their disengagement from sectoral extension agencies in contrast to their enthusiastic use of generic business support. Consequently, consideration is made of adjustments in extension and advisory provision to enhance on-farm entrepreneurial diversification.     

Sustainabilty integration in product portfolio for sustainable development: Findings from the industry

Many companies decide which services, products, and technologies to include in their product portfolio using evaluation criteria, which often consider cost, quality, risk, revenue, time, and market position. Incorporating sustainability in the portfolio evaluation criteria could ensure the development of sustainable solutions from the early stages of the product development process, where there is more room for innovation. The aim of this paper is to understand how sustainability can be integrated in the company portfolio development. Semi-structured interviews were performed with experts in the field and representatives from multinational manufacturing companies with operations in Sweden. Main findings from this study include a proposed definition of a sustainability product portfolio concept and suggested portfolio evaluation criteria from an industry perspective. Future research will develop a method to guide manufacturing companies in sustainability integration and implementation in product portfolios.     

Golden eggs versus plastic eggs: hyperbolic preferences and the persistence of debit

The popularity of debit cards is good news from a social perspective since they carry a lower transaction cost than other non-cash payment methods. Unfortunately, the reason for this consumer driven growth remains a mystery. Consumers do not benefit from any of the gains created by the low transaction costs. Rather, the incentives being offered to consumers encourage them to use credit cards despite higher transaction costs. We demonstrate that consumers may be using debit cards as a means of budgetary precommitment when preferences are hyperbolic. Using data from the 2004 Survey of Consumer Finances, we find that consumers substitute debit use for investment in illiquid assets as a method of self constraint as incomes fall.     

The second time around: reaching for the right package

There are several key questions to ask when replacing a software package. Taking the time to get the answers will save a lot of time, money and grief.     

A Stein-type shrinkage estimator of the covariance matrix for portfolio selections

The covariance matrix plays a crucial role in portfolio optimization problems as the risk and correlation measure of asset returns. An improved estimation of the covariance matrix can enhance the performance of the portfolio. In this paper, based on the Cholesky decomposition of the covariance matrix, a Stein-type shrinkage strategy for portfolio weights is constructed under the mean-variance framework. Furthermore, according to the agent’s maximum expected utility value, a portfolio selection strategy is proposed. Finally, simulation experiments and an empirical study are used to test the feasibility of the proposed strategy. The numerical results show our portfolio strategy performs satisfactorily.     

Identifying the distressed areas: An integrated-multivariate approach

The paper seeks to identify the areas of economic distress in a development planning objective aims at maintaining inter-regional balance in economic development. Using an integrated rather than a fragmentary approach, and employing the multivariate technique in the analysis, the results show that the country in question is still far from achieving the desired goal.     

多中心职住共生模式识别——以北京市为例

北京疏解非首都核心功能的关键是促进外围次中心地区产城融合.借用共生原理,基于街道乡镇空间单元,分析北京中心城区与外围新区、外围各中心与本地居住与就业共生模式.结果表明,通过产业转移比迁移人口更有利于产城融合多中心的形成.昌平和大兴是非首都核心功能主要疏解地;顺义通过产业园区扩充带动居住;怀柔城区通过增强居住密度带动产业...     

Corporate sponsorships: increasing your slice of the pie

Organizations that sell sponsorship "properties" need to understand that when corporate donors give generously to causes, they do so with specific marketing objectives in mind.     

Impact of diversification on the distribution of stock returns: International evidence

In the past, stock returns are often assumed to be normally distributed. Potential gains from international portfolio diversification are thus based on a mean-variance framework. However, numerous empirical results reveal that stock returns are actually not normally distributed. Although previous studies found that both skewness and kurtosis can be rapidly diversified away, these results are only valid for a random sample of a given portfolio size. This paper studies the joint effect of diversification and intervaling on the skewness and kurtosis of eleven international stock market indexes with a holding period spanning from one to six months. A complete set of all possible combinations of portfolios is used. It is found that diversification does not reduce either skewness or kurtosis. As the portfolio size increases, portfolio returns become more negatively skewed and more leptokurtic. As a result, a rational investor may not gain from international diversification.     

A demonstration of the non-necessity of marginal conditional stochastic dominance for portfolio inefficiency

This paper demonstrates that a finding of marginal conditional stochastic dominance between two sub-portfolios of a portfolio, while sufficient for showing inefficiency of the portfolio and hence sub-optimality of the portfolio for all risk-averse investors, is not necessary. It is shown by an example that a portfolio can be inefficient even if, for all pairs of sub-portfolios, there is no marginal conditional stochastic dominance. In such a situation, a universally preferred portfolio can be constructed on the margin only by adjusting the shares of more than two sub-portfolios.     

Swedish auditors' view of auditing: Doing things right versus doing the right things

Abstract

This paper aims to describe and analyse the thought patterns of Swedish auditors with regard to the way in which they audit information provided by listed companies, and possible changes in their duties. Eighty-two auditors were interviewed using the repertory grid technique and open-ended interview questions. To check the stability in the thought patterns of the respondents, six retests were made and, to validate the findings, an expert panel and two reference groups consisting of auditors and other representatives of the accounting and auditing professions were consulted. Distinct patterns emerged in the mean grid of the thought patterns of all the respondents. One dimension was related to the time perspective, past versus future, and another to auditing practice. Auditors devote a relatively long time and considerable effort to objects that can be satisfactorily verified, but not to objects that they perceive as being of primary importance to investors and other stakeholders. This inconsistency in the thought patterns of the auditors is similar to the gap between auditing in practice and stakeholders' expectations of auditing, which is a phenomenon frequently found in previous research. Moreover, the auditors were very reluctant to make statements about any information except that elicited according to current practice. In addition to this traditional view, the auditors appear to be more concerned about their own situation than that of the parties they are meant to be protecting. Doing things right seems to be more important than doing the right things. That the auditors spend much time on objects that they themselves do not consider to be of primary importance for the investors and other stakeholders, and their unwillingness to change current practice is of great concern in Sweden, where there is a strong belief in self-regulation of the auditing profession.